| Title | Remanent Flux Negative Effects on Transformer Diagnostic Test Results and a Novel Approach for Its Elimination |
| Publication Type | Journal Article |
| Year of Publication | 2018 |
| Authors | Gerdroodbari, Y. Z., Davarpanah, M., Farhangi, S. |
| Journal | IEEE Transactions on Power Delivery |
| Volume | 33 |
| Pagination | 2938–2945 |
| Date Published | dec |
| ISSN | 1937-4208 |
| Keywords | Circuit faults, compositionality, cyber physical systems, Demagnetizing, hysteresis, hysteresis curve, instrument transformer types, Instrument transformers, Internet of Things, Magnetic Remanence, minor loop, power transformer, power transformer testing, power transformers, pubcrawl, Radio frequency, remanence, remanent flux (RF), remanent flux negative effects, Resiliency, simulation studies, transformer, transformer core, Transformer cores, transformer diagnostic test results, transformer diagnostic tests, voltage 0.2 kV, voltage 0.4 kV, voltage 20.0 kV, voltage 230 kV, voltage 63 kV, Voltage measurement, Windings |
| Abstract | Influence of remanent flux on hysteresis curve of the transformer core is addressed in this paper. In addition, its significant negative effect on transformer diagnostic tests is quantified based on experimental studies. Furthermore, a novel approach is proposed to efficiently and quickly eliminate the remanent flux. This approach is evaluated based on simulation studies on a 230/63-kV power transformer. Meanwhile, experimental studies are performed on both 0.2/0.2 and 20/0.4 kV transformers. These studies reveal that the approach not only is well able to eliminate the remanent flux, but also it has various advantages over the commonly used method. In addition, this approach is equally applicable for various power, distribution, and instrument transformer types. |
| DOI | 10.1109/TPWRD.2018.2827179 |
| Citation Key | gerdroodbari_remanent_2018 |
Remanent Flux Negative Effects on Transformer Diagnostic Test Results and a Novel Approach for Its Elimination